You might think that if you were incredibly wealthy, you would live a life of opulence. Yet some of the richest people in the world live frugally — and regular people can learn something from them.

Click through to keep reading about celebrities with high net worths who haven’t let living large mean spending large.

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Warren Buffett

The Oracle of Omaha is worth over $80 billion, according to Forbes, making him one of the 10 richest people in the world. Yet, he lives a very frugal lifestyle.

Buffett is a walking lesson in how to live frugally, which he has demonstrated by living in the same house he bought in 1958. He once told Berkshire Hathaway investors, “For the $31,500 I paid for our house, my family and I gained 52 years of terrific memories, with more to come.”

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Mark Zuckerberg

You might not think of this as what rich people do, but the Facebook founder has been seen driving an Acura valued at around $30,000. Zuckerberg also wears jeans and a T-shirt nearly every day despite a net worth of over $73 billion.

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Sarah Jessica Parker

Parker’s journey to fame and fortune is one of the many celebrity rags-to-riches stories. She grew up as one of eight children in a family that spent time on welfare, according to The New York Times.

But Parker has kept her frugal ways despite her fame and fortune. And, she’s passing her habits on to her own children. For example, she dressed her son in clothes that have been handed down from her nephews.

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Dave Grohl

His stints as drummer for Nirvana and front man for the Foo Fighters have helped Grohl amass a net worth estimated at $280 million. But he watches his spending and told The Red Bulletin that he drives “a family car.” Grohl told The Guardian he learned “money will kill you” after his mother had a stroke while paying the family’s taxes.

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Sarah Michelle Gellar

The star of “Buffy the Vampire Slayer” has been known to grocery shop at upscale Whole Foods Market. But she has said that when she’s there, she only buys what’s on sale. And, she has said that she brings her own bags because she gets a discount for doing so.

Carlos Slim

Mexican business mogul Carlos Slim regularly appears on lists of the world’s wealthiest people, but you won’t find his home on any list of celebrity houses. His net worth is estimated at almost $60 billion, but he has lived in the same home for over 40 years.

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Kristen Bell

Eschewing the three-day destination wedding many celebrity couples choose, actress Kristen Bell and fellow actor Dax Shepard got married at the local courthouse. The total cost for their nuptials: $142. Bell is also a regular coupon clipper.

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Ingvar Kamprad

The founder of the ubiquitous furniture chain IKEA practiced what he preached when it came to the affordable, assemble-it-yourself products his company sells. When traveling, he flew in coach class and drove a 20-year-old Volvo, according to CNBC.

Michelle Obama

Former first lady Michelle Obama paid for her own clothes while in the White House. Many of the elegant gowns she wore were donated by their designers. When she shopped for herself, Obama often went to retail stores known for reasonable prices. On one appearance on NBC’s “Today” show, she sported a $35 dress from fast fashion retailer H&M.

Mark Cuban

Business mogul and Dallas Mavericks owner Mark Cuban promotes his philosophy on getting rich by relating his own story of how to live cheap. When he was in his 20s, he found the cheapest way to live was by sharing an apartment, and there were many nights he slept on the couch or even the floor.

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Ashton Kutcher and Mila Kunis

One of Hollywood’s richest “it” couples, Kutcher and Kunis are becoming known as frugal celebrities. They are trying to keep their children grounded by passing on their frugal habits. That includes not going overboard on Christmas presents for their children. Kunis — who grew up in Communist Russia — told Entertainment Tonight that they have asked their parents to limit themselves to one gift.

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Rob Gronkowski

Rob Gronkowski is very careful about not spending money recklessly, writing in his 2015 book — “It’s Good to be Gronk” — that he has yet to spend a dime of his NFL paychecks or even his signing bonus. He’s lived off the money he receives from endorsements, avoiding pricey cars and wearing his favorite pair of blue jeans from high school.

T. Boone Pickens

Energy mogul T. Boone Pickens has long been recognized as a savvy businessman and legendary tightwad. By his own admission, he has taken a detour in a conference room to turn the light out on his way out the door. He credits his grandmother with instilling this habit, saying she told him if he didn’t turn out the light when he was finished in a room, she would give him the light bill and expect him to pay it.

Jay Leno

The stand-up comedian and longtime host of the “Tonight Show” says he has always had two incomes. He would live off the earnings from one and save the money from the other. Even when Leno hosted the “Tonight Show,” he lived off the money he made doing stand-up comedy. The money from his show went right in the bank.

Tyra Banks

Banks — who has worked as a model, actress, author and host of “America’s Next Top Model” — is one of many celebrities who live modestly. She saves money by collecting the shampoo, conditioner and soap from her hotel rooms and using leftovers from meals the next day.

Teri Hatcher

“Desperate Housewives” star Teri Hatcher has kept her cars until they have at least 100,000 miles on them. She has also baked for her daughter’s school celebrations rather than buying treats to bring in.

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Jennifer Lawrence

Star of the hugely successful “Hunger Games” movies, Lawrence continued living in her parents’ condominium even after making eight figures. “I think it would be very bizarre to live in a big mansion by myself,” she told Elle.

Lawrence eventually moved into her own digs, however. Variety reports that she bought a loft-style condo in New York City in early 2017 for a little more than $9 million — and then proceeded to place it on the rental market while she was filming “Red Sparrow” in London.

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Katie Couric

The longtime newscaster credits her mother with teaching her to search for bargains. According to Parade, she brings leftovers to work for lunch and borrows clothes from her friends.

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Kate Middleton

The Duchess of Cambridge is well known for wearing the same outfit for multiple occasions — something most of us find pretty reasonable but which is not common among all celebrities. And her grandmother-in-law, the current Queen, has been known to request that unnecessary lights be turned off in Buckingham Palace.

Tim Cook

As CEO of Apple, Tim Cook took home $12.8 million in 2017, $3 million of that in base pay. But according to Adam Lashinsky’s book, “Inside Apple,” Cook said he likes “to be reminded of where I came from, and putting myself in modest surroundings helps me do that. Money is not a motivator for me.”

Hilary Swank

Award-winning actress Hilary Swank lived in a mobile home when she was younger. That experience instilled frugal habits that she retains to this day, like clipping coupons.

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Mitt Romney

Despite coming from a wealthy background and parlaying that advantage into even greater wealth, former presidential candidate and business leader Mitt Romney knows the value of a dollar. He has performed home renovations himself and has been known to play golf with clubs from Kmart.

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Carrie Underwood

One of the wealthiest country music stars, Carrie Underwood admitted she clips coupons when she goes grocery shopping. Further illustrating that there’s not that much difference between some rich and poor people, she also said she often forgets to bring the coupons with her to the store. And if you’re wondering what rich people eat, Underwood said she buys stir-fry kits and meatless burgers.

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Ashley Greene

“Twilight” actress Ashley Greene credits her father with instilling frugal ways in her. In a 2012 interview with Marie Claire, Greene said she spends carefully because she wants to know that she doesn’t have to take an acting job for a few years if she doesn’t want to.

Vincent Kartheiser

The “Mad Men” alum was relying on public transportation and living in a single-room apartment in 2010, even after he scored a choice role in the successful drama, according to the New York Times. He’s also talked about how taking public transit allowed him to have interactions with others and to people-watch.

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